There is provided a head-up display for a vehicle. The head-up display has a first housing and a second housing. The first housing comprises a picture generating unit and optical system. The second housing comprises a substantially flat cover glass and a layer. The picture generating unit is arranged to output pictures. The picture generating unit comprises a light source and a spatial light modulator. The light source is arranged to emit light. The spatial light modulator is arranged to receive the light from the light source and spatially-modulate the light in accordance with computer-generated light-modulation patterns displayed on the spatial light modulator to form a holographic reconstruction corresponding to each picture. The optical system is arranged to receive the pictures output by the picture generating unit and relay the pictures using an optical combiner to form a virtual image of each picture. The optical combiner combines light output by the picture generating unit with light from a real-world scene to present combined images to a viewer within an eye-box. The second housing is disposed between the first housing and optical combiner. The substantially flat cover glass is arranged to protect the first housing. The layer is arranged to change the trajectory of light such that any sunlight reflected by the cover glass is deflected away from the eye-box.

A display device and a vehicle including the display device, a vehicle-mounted display system and a method of manufacturing a holographic lens are provided. The display device includes a display array generation device and a first lens layer. The display array generation device is configured to provide a plurality of collimated light beams parallel to each other and spaced from each other; the first lens layer is arranged at a light exiting side of the display array generation device. The first lens layer includes a plurality of first microlenses arranged in array, and is configured to receive a plurality of collimated light beams. The plurality of collimated light beams correspond to the plurality of first microlenses, to achieve a plurality of scanning imaging, respectively. The display device can be applied to head-up display systems.

An optical system includes a substrate and a polarization volume hologram (PVH) composite film formed over the substrate. The PVH composite film includes a first PVH layer formed over the substrate and having a helix twist of a first handedness, and a second PVH layer coupled to the first PVH layer and having a helix twist of a second handedness orthogonal to the first handedness. The first PVH layer is configured to reflect and converge circularly polarized light having the first handedness. The second PVH layer is configured to reflect and converge circularly polarized light having the second handedness.

An optical system for an augmented reality head mounted display eyepiece that is configured to deliver images to the eye wherein the optical system includes optics. The optics are disposed so as to receive light output from the light source. The optics further arranged with respect to a spatial light modulator such that the light received from the light source passes through the optics and illuminates the spatial light modulator. The light illuminating the spatial light modulator is redirected back through the optics and is coupled into at least one waveguide through at least one in-coupling optical element. At least a portion of the coupled light is ejected from at least one waveguide by at least one out-coupling optical element and directed to the eye of the user.

The disclosed optical lens assemblies may include a structural support element, a deformable element coupled to the structural support element, and a deformable medium positioned between the deformable element and the structural support element. The deformable element may include a base element that, when deformed, alters an optical property of the optical lens assembly. The deformable element may have a non-uniform stiffness. Related methods of fabricating an optical lens assembly are also disclosed.

A head mounted display system can include a camera, at least one waveguide, at least one coupling optical element that is configured such that light is coupled into said waveguide and guided therein, and at least one out-coupling element. The at least one out-coupling element can be configured to couple light that is guided within said waveguide out of said waveguide and direct said light to said camera. The at least one coupling element may comprise a diffractive optical element having optical power.

There is provided a head-up display for a vehicle, the head-up display comprising: a picture generating unit arranged to generate a picture on a light receiving surface; and an optical system arranged to image the picture, wherein the optical system comprises: an input arranged to receive light of the picture; an output arranged to output light forming an image of the picture; a first mirror and second mirror arranged to guide light from the input to the output along an optical path, wherein the optical path comprises: a first optical path from the input to the second mirror including a transmission through the first mirror; and second optical path from the second mirror to the output including a reflection off the first mirror.

A light projection apparatus is provided comprising: a source of light; a switchable grating on a first substrate; and a diffractive optical element. Light is diffracted at least once by the switchable grating and is diffracted at least once by the DOE.

A head-up display system and display method, a vehicle, and a computer product. The head-up display system includes: a display device configured to output first linearly polarized light for displaying a first image in a first time intervals and output second linearly polarized light for displaying a second image in a second time intervals; and a polarization beam splitting element in an optical path of light exiting from the display device, being configured to deflect a propagation direction of the first linearly polarized light by a first angle and deflect a propagation direction of the second linearly polarized light by a second angle, and the first angle and the second angle are different from each other.

A head-up display for a vehicle, the head-up display including a picture generating unit arranged to generate a picture on a light receiving surface; and an optical system arranged to image the picture, where the optical system includes an input arranged to receive light of the picture; an output arranged to output light forming an image of the picture; a first mirror and second mirror arranged to guide light from the input to the output along an optical path, where the optical path includes a first optical path from the input to the second mirror including a transmission through the first mirror; and second optical path from the second mirror to the output including a reflection off the first mirror.